A process for controlling the stirring energy delivered by a gas flowing through a liquid and a process for detection and control of arc flare in electric arc heating furnaces
CA 2266286 A1 · Owner: Walker, David I. · Inventors: Walker, David I.; Jones, Jeremy A. T.; Kemeny, Frank L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The measurement and control of stirring energy that is imparted by a gas flowing through a liquid metal in a container is achieved by monitoring the degree of vibration of the container using an appropriate transducer and amplifying, and processing the vibration signal to provide an indication of the degree of stirring energy applied to the container. The processed signal is converted to a signal for an operator interface, PLC, or other suitable controller to open or close a flow valve to cause stirring gas to be delivered to the container to provide the desired stirring energy for the liquid within.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 19, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 19, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 19, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.